Home / 1,908.03-2,632.73-1,121.79

Finding the Fourth Proportional to 1,908.03, 2,632.73 and 1,121.79

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Solution

The fourth proportional to 1,908.03, 2,632.73 and 1,121.79 is: 1,547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.03 : 2,632.73 = 1,121.79 : x
  2. Step 2: Convert to fraction form
    1,908.03/2,632.73 = 1,121.79/x
  3. Step 3: Cross multiply
    1,908.03x = 2,632.73 × 1,121.79
  4. Step 4: Simplify right side
    1,908.03x = 2,953,364.58
  5. Step 5: Solve for x
    x = 2,953,364.58/1,908.03
  6. Step 6: Final answer
    x = 1,547.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.